Coffee cup



FIG. 1 is a top right side elevational view of a coffee cup showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view, the left side elevational view being a mirror image thereof, and,

FIG. 4 is a rear elevational view thereof, the front elevational view being plain and unornamented. 

The ornamental design for a coffee cup, as shown and described. 